Hi. We can have 25kg pp on our Monarch flight, I have packed this weekend and although everything we need is in our cases there is no room for any purchases. The two cases weigh 18kg each, less another 6kg when I've used up all the toiletries, so I have kilos spare just not space, can I take an extra case/holdall to make up the spare kilos for on the way home? Does it matter how many bags you have if it adds up to 50kg? Many thanks.